Increasing back pain for weeks, at night more than during the day, which led to increased insomnia. Paresthesia of the left hand.

Pathomorphology or Pathophysiology of this disease :

Osteoid Osteomas make up about 14% of all bone tumors, with the highest age frequency from 10 to 20 years. The often hypervascularized nidus causes a contrast uptake in MRI. The surrounding corticalis is usually asymmetrically thickened. A corresponding reaction of the surrounding soft tissue is common.The vertebra are, after the proximal femur and tibia, the third most common localization. Boys are 3 times more often afflicted than girls. Nightly pain is typical. The proof of the nidus was, in our case, best found with CT.